10000021003200 has 378 divisors, whose sum is σ = 37756167196176. Its totient is φ = 2509808148480.

The previous prime is 10000021003153. The next prime is 10000021003223. The reversal of 10000021003200 is 230012000001.

It is a happy number.

It is a super-2 number, since 2×10000021003200² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2960137 + ... + 5363063.

Almost surely, 2^{10000021003200} is an apocalyptic number.

10000021003200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10000021003200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18878083598088).

10000021003200 is an abundant number, since it is smaller than the sum of its proper divisors (27756146192976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10000021003200 is a wasteful number, since it uses less digits than its factorization.

10000021003200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402989 (or 2402954 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 10000021003200 its reverse (230012000001), we get a palindrome (10230033003201).

The spelling of 10000021003200 in words is "ten trillion, twenty-one million, three thousand, two hundred".